30021100211 has 4 divisors (see below), whose sum is σ = 30659847072. Its totient is φ = 29382353352.

The previous prime is 30021100181. The next prime is 30021100231. The reversal of 30021100211 is 11200112003.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 30021100211 - 2⁶ = 30021100147 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30021100192 and 30021100201.

It is not an unprimeable number, because it can be changed into a prime (30021100231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 319373360 + ... + 319373453.

It is an arithmetic number, because the mean of its divisors is an integer number (7664961768).

Almost surely, 2^30021100211 is an apocalyptic number.

30021100211 is a deficient number, since it is larger than the sum of its proper divisors (638746861).

30021100211 is an equidigital number, since it uses as much as digits as its factorization.

30021100211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 638746860.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 30021100211 its reverse (11200112003), we get a palindrome (41221212214).

The spelling of 30021100211 in words is "thirty billion, twenty-one million, one hundred thousand, two hundred eleven".